By now we know that iOS users update their software pretty quickly. One month after Apple released iOS 6.0, the software accounted for 60% of all iOS web traffic. Now that Apple has released iOS 6.1, the latest release alone accounts for over half of all web traffic.

Chitika has been tracking iOS web traffic using ad impressions from millions of iOS devices, and the last few weeks reveal how aggressively Apple users continue to update their software.

Vodafone U.K. has told iPhone 4S users that it’s okay to update their handsets to Apple’s latest iOS 6.1.1 release. The carrier had previously warned that updating to iOS 6.1 could cause connectivity problems, but it has now confirmed that those issues are fixed in the latest release.

Apple released iOS 6.1.1 today. Interestingly, the software was only made available as a critical update for the iPhone 4S. All of Apple’s other iOS devices are still on iOS 6.1. There were bugs in iOS 6.1 relating to cellular connectivity and battery life, but the concerns were specifically related to only the 4S.

Shortly after the evasi0n jailbreak made its much-anticipated debut earlier this week, Apple pushed out its iOS 6.1.1 beta to registered developers. We suspected that the new release would patch the exploits that evasi0n used to hack iOS devices, but fortunately for the many millions of people enjoying its benefits, that’s not the case. At least not yet.